Question

Give an example of the reaction in which $\Delta H$ and $\Delta U$ are the same. Also give the reason.

Answer 1

Give an example of the reaction in which $\Delta$H and $\Delta$U are the same. Also give the reason.
$\Delta H=\Delta U+\Delta nRT$
When $\Delta n=0$,
$\Delta H=\Delta U+(0\times RT)$
$\Delta H=\Delta U+0$
$\Delta H=\Delta U$
For the reaction, $C{H}_{2}O\left(g\right)+O_2\left(g\right)\to C{O}_2\left(g\right)+H_{2}O\left(g\right)$
$\Delta n=1+1-(1+1)$
$\Delta n=0$
Hence, $\Delta H=\Delta U$